1/* 2 * Support for ACX565AKM LCD Panel used on Nokia N900 3 * 4 * Copyright (C) 2010 Nokia Corporation 5 * 6 * Original Driver Author: Imre Deak <imre.deak@nokia.com> 7 * Based on panel-generic.c by Tomi Valkeinen <tomi.valkeinen@nokia.com> 8 * Adapted to new DSS2 framework: Roger Quadros <roger.quadros@nokia.com> 9 * 10 * This program is free software; you can redistribute it and/or modify it 11 * under the terms of the GNU General Public License version 2 as published by 12 * the Free Software Foundation. 13 * 14 * This program is distributed in the hope that it will be useful, but WITHOUT 15 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 16 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 17 * more details. 18 * 19 * You should have received a copy of the GNU General Public License along with 20 * this program. If not, see <http://www.gnu.org/licenses/>. 21 */ 22 23#include <linux/kernel.h> 24#include <linux/module.h> 25#include <linux/platform_device.h> 26#include <linux/delay.h> 27#include <linux/spi/spi.h> 28#include <linux/jiffies.h> 29#include <linux/sched.h> 30#include <linux/backlight.h> 31#include <linux/fb.h> 32 33#include <plat/display.h> 34 35#define MIPID_CMD_READ_DISP_ID 0x04 36#define MIPID_CMD_READ_RED 0x06 37#define MIPID_CMD_READ_GREEN 0x07 38#define MIPID_CMD_READ_BLUE 0x08 39#define MIPID_CMD_READ_DISP_STATUS 0x09 40#define MIPID_CMD_RDDSDR 0x0F 41#define MIPID_CMD_SLEEP_IN 0x10 42#define MIPID_CMD_SLEEP_OUT 0x11 43#define MIPID_CMD_DISP_OFF 0x28 44#define MIPID_CMD_DISP_ON 0x29 45#define MIPID_CMD_WRITE_DISP_BRIGHTNESS 0x51 46#define MIPID_CMD_READ_DISP_BRIGHTNESS 0x52 47#define MIPID_CMD_WRITE_CTRL_DISP 0x53 48 49#define CTRL_DISP_BRIGHTNESS_CTRL_ON (1 << 5) 50#define CTRL_DISP_AMBIENT_LIGHT_CTRL_ON (1 << 4) 51#define CTRL_DISP_BACKLIGHT_ON (1 << 2) 52#define CTRL_DISP_AUTO_BRIGHTNESS_ON (1 << 1) 53 54#define MIPID_CMD_READ_CTRL_DISP 0x54 55#define MIPID_CMD_WRITE_CABC 0x55 56#define MIPID_CMD_READ_CABC 0x56 57 58#define MIPID_VER_LPH8923 3 59#define MIPID_VER_LS041Y3 4 60#define MIPID_VER_L4F00311 8 61#define MIPID_VER_ACX565AKM 9 62 63struct acx565akm_device { 64 char *name; 65 int enabled; 66 int model; 67 int revision; 68 u8 display_id[3]; 69 unsigned has_bc:1; 70 unsigned has_cabc:1; 71 unsigned cabc_mode; 72 unsigned long hw_guard_end; /* next value of jiffies 73 when we can issue the 74 next sleep in/out command */ 75 unsigned long hw_guard_wait; /* max guard time in jiffies */ 76 77 struct spi_device *spi; 78 struct mutex mutex; 79 80 struct omap_dss_device *dssdev; 81 struct backlight_device *bl_dev; 82}; 83 84static struct acx565akm_device acx_dev; 85static int acx565akm_bl_update_status(struct backlight_device *dev); 86 87/*--------------------MIPID interface-----------------------------*/ 88 89static void acx565akm_transfer(struct acx565akm_device *md, int cmd, 90 const u8 *wbuf, int wlen, u8 *rbuf, int rlen) 91{ 92 struct spi_message m; 93 struct spi_transfer *x, xfer[5]; 94 int r; 95 96 BUG_ON(md->spi == NULL); 97 98 spi_message_init(&m); 99 100 memset(xfer, 0, sizeof(xfer)); 101 x = &xfer[0]; 102 103 cmd &= 0xff; 104 x->tx_buf = &cmd; 105 x->bits_per_word = 9; 106 x->len = 2; 107 108 if (rlen > 1 && wlen == 0) { 109 /* 110 * Between the command and the response data there is a 111 * dummy clock cycle. Add an extra bit after the command 112 * word to account for this. 113 */ 114 x->bits_per_word = 10; 115 cmd <<= 1; 116 } 117 spi_message_add_tail(x, &m); 118 119 if (wlen) { 120 x++; 121 x->tx_buf = wbuf; 122 x->len = wlen; 123 x->bits_per_word = 9; 124 spi_message_add_tail(x, &m); 125 } 126 127 if (rlen) { 128 x++; 129 x->rx_buf = rbuf; 130 x->len = rlen; 131 spi_message_add_tail(x, &m); 132 } 133 134 r = spi_sync(md->spi, &m); 135 if (r < 0) 136 dev_dbg(&md->spi->dev, "spi_sync %d\n", r); 137} 138 139static inline void acx565akm_cmd(struct acx565akm_device *md, int cmd) 140{ 141 acx565akm_transfer(md, cmd, NULL, 0, NULL, 0); 142} 143 144static inline void acx565akm_write(struct acx565akm_device *md, 145 int reg, const u8 *buf, int len) 146{ 147 acx565akm_transfer(md, reg, buf, len, NULL, 0); 148} 149 150static inline void acx565akm_read(struct acx565akm_device *md, 151 int reg, u8 *buf, int len) 152{ 153 acx565akm_transfer(md, reg, NULL, 0, buf, len); 154} 155 156static void hw_guard_start(struct acx565akm_device *md, int guard_msec) 157{ 158 md->hw_guard_wait = msecs_to_jiffies(guard_msec); 159 md->hw_guard_end = jiffies + md->hw_guard_wait; 160} 161 162static void hw_guard_wait(struct acx565akm_device *md) 163{ 164 unsigned long wait = md->hw_guard_end - jiffies; 165 166 if ((long)wait > 0 && wait <= md->hw_guard_wait) { 167 set_current_state(TASK_UNINTERRUPTIBLE); 168 schedule_timeout(wait); 169 } 170} 171 172/*----------------------MIPID wrappers----------------------------*/ 173 174static void set_sleep_mode(struct acx565akm_device *md, int on) 175{ 176 int cmd; 177 178 if (on) 179 cmd = MIPID_CMD_SLEEP_IN; 180 else 181 cmd = MIPID_CMD_SLEEP_OUT; 182 /* 183 * We have to keep 120msec between sleep in/out commands. 184 * (8.2.15, 8.2.16). 185 */ 186 hw_guard_wait(md); 187 acx565akm_cmd(md, cmd); 188 hw_guard_start(md, 120); 189} 190 191static void set_display_state(struct acx565akm_device *md, int enabled) 192{ 193 int cmd = enabled ? MIPID_CMD_DISP_ON : MIPID_CMD_DISP_OFF; 194 195 acx565akm_cmd(md, cmd); 196} 197 198static int panel_enabled(struct acx565akm_device *md) 199{ 200 u32 disp_status; 201 int enabled; 202 203 acx565akm_read(md, MIPID_CMD_READ_DISP_STATUS, (u8 *)&disp_status, 4); 204 disp_status = __be32_to_cpu(disp_status); 205 enabled = (disp_status & (1 << 17)) && (disp_status & (1 << 10)); 206 dev_dbg(&md->spi->dev, 207 "LCD panel %senabled by bootloader (status 0x%04x)\n", 208 enabled ? "" : "not ", disp_status); 209 return enabled; 210} 211 212static int panel_detect(struct acx565akm_device *md) 213{ 214 acx565akm_read(md, MIPID_CMD_READ_DISP_ID, md->display_id, 3); 215 dev_dbg(&md->spi->dev, "MIPI display ID: %02x%02x%02x\n", 216 md->display_id[0], md->display_id[1], md->display_id[2]); 217 218 switch (md->display_id[0]) { 219 case 0x10: 220 md->model = MIPID_VER_ACX565AKM; 221 md->name = "acx565akm"; 222 md->has_bc = 1; 223 md->has_cabc = 1; 224 break; 225 case 0x29: 226 md->model = MIPID_VER_L4F00311; 227 md->name = "l4f00311"; 228 break; 229 case 0x45: 230 md->model = MIPID_VER_LPH8923; 231 md->name = "lph8923"; 232 break; 233 case 0x83: 234 md->model = MIPID_VER_LS041Y3; 235 md->name = "ls041y3"; 236 break; 237 default: 238 md->name = "unknown"; 239 dev_err(&md->spi->dev, "invalid display ID\n"); 240 return -ENODEV; 241 } 242 243 md->revision = md->display_id[1]; 244 245 dev_info(&md->spi->dev, "omapfb: %s rev %02x LCD detected\n", 246 md->name, md->revision); 247 248 return 0; 249} 250 251/*----------------------Backlight Control-------------------------*/ 252 253static void enable_backlight_ctrl(struct acx565akm_device *md, int enable) 254{ 255 u16 ctrl; 256 257 acx565akm_read(md, MIPID_CMD_READ_CTRL_DISP, (u8 *)&ctrl, 1); 258 if (enable) { 259 ctrl |= CTRL_DISP_BRIGHTNESS_CTRL_ON | 260 CTRL_DISP_BACKLIGHT_ON; 261 } else { 262 ctrl &= ~(CTRL_DISP_BRIGHTNESS_CTRL_ON | 263 CTRL_DISP_BACKLIGHT_ON); 264 } 265 266 ctrl |= 1 << 8; 267 acx565akm_write(md, MIPID_CMD_WRITE_CTRL_DISP, (u8 *)&ctrl, 2); 268} 269 270static void set_cabc_mode(struct acx565akm_device *md, unsigned mode) 271{ 272 u16 cabc_ctrl; 273 274 md->cabc_mode = mode; 275 if (!md->enabled) 276 return; 277 cabc_ctrl = 0; 278 acx565akm_read(md, MIPID_CMD_READ_CABC, (u8 *)&cabc_ctrl, 1); 279 cabc_ctrl &= ~3; 280 cabc_ctrl |= (1 << 8) | (mode & 3); 281 acx565akm_write(md, MIPID_CMD_WRITE_CABC, (u8 *)&cabc_ctrl, 2); 282} 283 284static unsigned get_cabc_mode(struct acx565akm_device *md) 285{ 286 return md->cabc_mode; 287} 288 289static unsigned get_hw_cabc_mode(struct acx565akm_device *md) 290{ 291 u8 cabc_ctrl; 292 293 acx565akm_read(md, MIPID_CMD_READ_CABC, &cabc_ctrl, 1); 294 return cabc_ctrl & 3; 295} 296 297static void acx565akm_set_brightness(struct acx565akm_device *md, int level) 298{ 299 int bv; 300 301 bv = level | (1 << 8); 302 acx565akm_write(md, MIPID_CMD_WRITE_DISP_BRIGHTNESS, (u8 *)&bv, 2); 303 304 if (level) 305 enable_backlight_ctrl(md, 1); 306 else 307 enable_backlight_ctrl(md, 0); 308} 309 310static int acx565akm_get_actual_brightness(struct acx565akm_device *md) 311{ 312 u8 bv; 313 314 acx565akm_read(md, MIPID_CMD_READ_DISP_BRIGHTNESS, &bv, 1); 315 316 return bv; 317} 318 319 320static int acx565akm_bl_update_status(struct backlight_device *dev) 321{ 322 struct acx565akm_device *md = dev_get_drvdata(&dev->dev); 323 int r; 324 int level; 325 326 dev_dbg(&md->spi->dev, "%s\n", __func__); 327 328 mutex_lock(&md->mutex); 329 330 if (dev->props.fb_blank == FB_BLANK_UNBLANK && 331 dev->props.power == FB_BLANK_UNBLANK) 332 level = dev->props.brightness; 333 else 334 level = 0; 335 336 r = 0; 337 if (md->has_bc) 338 acx565akm_set_brightness(md, level); 339 else if (md->dssdev->set_backlight) 340 r = md->dssdev->set_backlight(md->dssdev, level); 341 else 342 r = -ENODEV; 343 344 mutex_unlock(&md->mutex); 345 346 return r; 347} 348 349static int acx565akm_bl_get_intensity(struct backlight_device *dev) 350{ 351 struct acx565akm_device *md = dev_get_drvdata(&dev->dev); 352 353 dev_dbg(&dev->dev, "%s\n", __func__); 354 355 if (!md->has_bc && md->dssdev->set_backlight == NULL) 356 return -ENODEV; 357 358 if (dev->props.fb_blank == FB_BLANK_UNBLANK && 359 dev->props.power == FB_BLANK_UNBLANK) { 360 if (md->has_bc) 361 return acx565akm_get_actual_brightness(md); 362 else 363 return dev->props.brightness; 364 } 365 366 return 0; 367} 368 369static const struct backlight_ops acx565akm_bl_ops = { 370 .get_brightness = acx565akm_bl_get_intensity, 371 .update_status = acx565akm_bl_update_status, 372}; 373 374/*--------------------Auto Brightness control via Sysfs---------------------*/ 375 376static const char *cabc_modes[] = { 377 "off", /* always used when CABC is not supported */ 378 "ui", 379 "still-image", 380 "moving-image", 381}; 382 383static ssize_t show_cabc_mode(struct device *dev, 384 struct device_attribute *attr, 385 char *buf) 386{ 387 struct acx565akm_device *md = dev_get_drvdata(dev); 388 const char *mode_str; 389 int mode; 390 int len; 391 392 if (!md->has_cabc) 393 mode = 0; 394 else 395 mode = get_cabc_mode(md); 396 mode_str = "unknown"; 397 if (mode >= 0 && mode < ARRAY_SIZE(cabc_modes)) 398 mode_str = cabc_modes[mode]; 399 len = snprintf(buf, PAGE_SIZE, "%s\n", mode_str); 400 401 return len < PAGE_SIZE - 1 ? len : PAGE_SIZE - 1; 402} 403 404static ssize_t store_cabc_mode(struct device *dev, 405 struct device_attribute *attr, 406 const char *buf, size_t count) 407{ 408 struct acx565akm_device *md = dev_get_drvdata(dev); 409 int i; 410 411 for (i = 0; i < ARRAY_SIZE(cabc_modes); i++) { 412 const char *mode_str = cabc_modes[i]; 413 int cmp_len = strlen(mode_str); 414 415 if (count > 0 && buf[count - 1] == '\n') 416 count--; 417 if (count != cmp_len) 418 continue; 419 420 if (strncmp(buf, mode_str, cmp_len) == 0) 421 break; 422 } 423 424 if (i == ARRAY_SIZE(cabc_modes)) 425 return -EINVAL; 426 427 if (!md->has_cabc && i != 0) 428 return -EINVAL; 429 430 mutex_lock(&md->mutex); 431 set_cabc_mode(md, i); 432 mutex_unlock(&md->mutex); 433 434 return count; 435} 436 437static ssize_t show_cabc_available_modes(struct device *dev, 438 struct device_attribute *attr, 439 char *buf) 440{ 441 struct acx565akm_device *md = dev_get_drvdata(dev); 442 int len; 443 int i; 444 445 if (!md->has_cabc) 446 return snprintf(buf, PAGE_SIZE, "%s\n", cabc_modes[0]); 447 448 for (i = 0, len = 0; 449 len < PAGE_SIZE && i < ARRAY_SIZE(cabc_modes); i++) 450 len += snprintf(&buf[len], PAGE_SIZE - len, "%s%s%s", 451 i ? " " : "", cabc_modes[i], 452 i == ARRAY_SIZE(cabc_modes) - 1 ? "\n" : ""); 453 454 return len < PAGE_SIZE ? len : PAGE_SIZE - 1; 455} 456 457static DEVICE_ATTR(cabc_mode, S_IRUGO | S_IWUSR, 458 show_cabc_mode, store_cabc_mode); 459static DEVICE_ATTR(cabc_available_modes, S_IRUGO, 460 show_cabc_available_modes, NULL); 461 462static struct attribute *bldev_attrs[] = { 463 &dev_attr_cabc_mode.attr, 464 &dev_attr_cabc_available_modes.attr, 465 NULL, 466}; 467 468static struct attribute_group bldev_attr_group = { 469 .attrs = bldev_attrs, 470}; 471 472 473/*---------------------------ACX Panel----------------------------*/ 474 475static int acx_get_recommended_bpp(struct omap_dss_device *dssdev) 476{ 477 return 16; 478} 479 480static struct omap_video_timings acx_panel_timings = { 481 .x_res = 800, 482 .y_res = 480, 483 .pixel_clock = 24000, 484 .hfp = 28, 485 .hsw = 4, 486 .hbp = 24, 487 .vfp = 3, 488 .vsw = 3, 489 .vbp = 4, 490}; 491 492static int acx_panel_probe(struct omap_dss_device *dssdev) 493{ 494 int r; 495 struct acx565akm_device *md = &acx_dev; 496 struct backlight_device *bldev; 497 int max_brightness, brightness; 498 struct backlight_properties props; 499 500 dev_dbg(&dssdev->dev, "%s\n", __func__); 501 dssdev->panel.config = OMAP_DSS_LCD_TFT | OMAP_DSS_LCD_IVS | 502 OMAP_DSS_LCD_IHS; 503 dssdev->panel.timings = acx_panel_timings; 504 505 if (dssdev->platform_enable) 506 dssdev->platform_enable(dssdev); 507 /* 508 * After reset we have to wait 5 msec before the first 509 * command can be sent. 510 */ 511 msleep(5); 512 513 md->enabled = panel_enabled(md); 514 515 r = panel_detect(md); 516 if (r) { 517 dev_err(&dssdev->dev, "%s panel detect error\n", __func__); 518 if (!md->enabled && dssdev->platform_disable) 519 dssdev->platform_disable(dssdev); 520 return r; 521 } 522 523 mutex_lock(&acx_dev.mutex); 524 acx_dev.dssdev = dssdev; 525 mutex_unlock(&acx_dev.mutex); 526 527 if (!md->enabled) { 528 if (dssdev->platform_disable) 529 dssdev->platform_disable(dssdev); 530 } 531 532 /*------- Backlight control --------*/ 533 534 props.fb_blank = FB_BLANK_UNBLANK; 535 props.power = FB_BLANK_UNBLANK; 536 537 bldev = backlight_device_register("acx565akm", &md->spi->dev, 538 md, &acx565akm_bl_ops, &props); 539 md->bl_dev = bldev; 540 if (md->has_cabc) { 541 r = sysfs_create_group(&bldev->dev.kobj, &bldev_attr_group); 542 if (r) { 543 dev_err(&bldev->dev, 544 "%s failed to create sysfs files\n", __func__); 545 backlight_device_unregister(bldev); 546 return r; 547 } 548 md->cabc_mode = get_hw_cabc_mode(md); 549 } 550 551 if (md->has_bc) 552 max_brightness = 255; 553 else 554 max_brightness = dssdev->max_backlight_level; 555 556 if (md->has_bc) 557 brightness = acx565akm_get_actual_brightness(md); 558 else if (dssdev->get_backlight) 559 brightness = dssdev->get_backlight(dssdev); 560 else 561 brightness = 0; 562 563 bldev->props.max_brightness = max_brightness; 564 bldev->props.brightness = brightness; 565 566 acx565akm_bl_update_status(bldev); 567 return 0; 568} 569 570static void acx_panel_remove(struct omap_dss_device *dssdev) 571{ 572 struct acx565akm_device *md = &acx_dev; 573 574 dev_dbg(&dssdev->dev, "%s\n", __func__); 575 sysfs_remove_group(&md->bl_dev->dev.kobj, &bldev_attr_group); 576 backlight_device_unregister(md->bl_dev); 577 mutex_lock(&acx_dev.mutex); 578 acx_dev.dssdev = NULL; 579 mutex_unlock(&acx_dev.mutex); 580} 581 582static int acx_panel_power_on(struct omap_dss_device *dssdev) 583{ 584 struct acx565akm_device *md = &acx_dev; 585 int r; 586 587 dev_dbg(&dssdev->dev, "%s\n", __func__); 588 589 mutex_lock(&md->mutex); 590 591 r = omapdss_sdi_display_enable(dssdev); 592 if (r) { 593 pr_err("%s sdi enable failed\n", __func__); 594 goto fail_unlock; 595 } 596 597 msleep(50); 598 599 if (dssdev->platform_enable) { 600 r = dssdev->platform_enable(dssdev); 601 if (r) 602 goto fail; 603 } 604 605 if (md->enabled) { 606 dev_dbg(&md->spi->dev, "panel already enabled\n"); 607 mutex_unlock(&md->mutex); 608 return 0; 609 } 610 611 /* 612 * We have to meet all the following delay requirements: 613 * 1. tRW: reset pulse width 10usec (7.12.1) 614 * 2. tRT: reset cancel time 5msec (7.12.1) 615 * 3. Providing PCLK,HS,VS signals for 2 frames = ~50msec worst 616 * case (7.6.2) 617 * 4. 120msec before the sleep out command (7.12.1) 618 */ 619 msleep(120); 620 621 set_sleep_mode(md, 0); 622 md->enabled = 1; 623 624 /* 5msec between sleep out and the next command. (8.2.16) */ 625 msleep(5); 626 set_display_state(md, 1); 627 set_cabc_mode(md, md->cabc_mode); 628 629 mutex_unlock(&md->mutex); 630 631 return acx565akm_bl_update_status(md->bl_dev); 632fail: 633 omapdss_sdi_display_disable(dssdev); 634fail_unlock: 635 mutex_unlock(&md->mutex); 636 return r; 637} 638 639static void acx_panel_power_off(struct omap_dss_device *dssdev) 640{ 641 struct acx565akm_device *md = &acx_dev; 642 643 dev_dbg(&dssdev->dev, "%s\n", __func__); 644 645 mutex_lock(&md->mutex); 646 647 if (!md->enabled) { 648 mutex_unlock(&md->mutex); 649 return; 650 } 651 set_display_state(md, 0); 652 set_sleep_mode(md, 1); 653 md->enabled = 0; 654 /* 655 * We have to provide PCLK,HS,VS signals for 2 frames (worst case 656 * ~50msec) after sending the sleep in command and asserting the 657 * reset signal. We probably could assert the reset w/o the delay 658 * but we still delay to avoid possible artifacts. (7.6.1) 659 */ 660 msleep(50); 661 662 if (dssdev->platform_disable) 663 dssdev->platform_disable(dssdev); 664 665 msleep(100); 666 667 omapdss_sdi_display_disable(dssdev); 668 669 mutex_unlock(&md->mutex); 670} 671 672static int acx_panel_enable(struct omap_dss_device *dssdev) 673{ 674 int r; 675 676 dev_dbg(&dssdev->dev, "%s\n", __func__); 677 r = acx_panel_power_on(dssdev); 678 679 if (r) 680 return r; 681 682 dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; 683 return 0; 684} 685 686static void acx_panel_disable(struct omap_dss_device *dssdev) 687{ 688 dev_dbg(&dssdev->dev, "%s\n", __func__); 689 acx_panel_power_off(dssdev); 690 dssdev->state = OMAP_DSS_DISPLAY_DISABLED; 691} 692 693static int acx_panel_suspend(struct omap_dss_device *dssdev) 694{ 695 dev_dbg(&dssdev->dev, "%s\n", __func__); 696 acx_panel_power_off(dssdev); 697 dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED; 698 return 0; 699} 700 701static int acx_panel_resume(struct omap_dss_device *dssdev) 702{ 703 int r; 704 705 dev_dbg(&dssdev->dev, "%s\n", __func__); 706 r = acx_panel_power_on(dssdev); 707 if (r) 708 return r; 709 710 dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; 711 return 0; 712} 713 714static void acx_panel_set_timings(struct omap_dss_device *dssdev, 715 struct omap_video_timings *timings) 716{ 717 int r; 718 719 if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) 720 omapdss_sdi_display_disable(dssdev); 721 722 dssdev->panel.timings = *timings; 723 724 if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) { 725 r = omapdss_sdi_display_enable(dssdev); 726 if (r) 727 dev_err(&dssdev->dev, "%s enable failed\n", __func__); 728 } 729} 730 731static void acx_panel_get_timings(struct omap_dss_device *dssdev, 732 struct omap_video_timings *timings) 733{ 734 *timings = dssdev->panel.timings; 735} 736 737static int acx_panel_check_timings(struct omap_dss_device *dssdev, 738 struct omap_video_timings *timings) 739{ 740 return 0; 741} 742 743 744static struct omap_dss_driver acx_panel_driver = { 745 .probe = acx_panel_probe, 746 .remove = acx_panel_remove, 747 748 .enable = acx_panel_enable, 749 .disable = acx_panel_disable, 750 .suspend = acx_panel_suspend, 751 .resume = acx_panel_resume, 752 753 .set_timings = acx_panel_set_timings, 754 .get_timings = acx_panel_get_timings, 755 .check_timings = acx_panel_check_timings, 756 757 .get_recommended_bpp = acx_get_recommended_bpp, 758 759 .driver = { 760 .name = "panel-acx565akm", 761 .owner = THIS_MODULE, 762 }, 763}; 764 765/*--------------------SPI probe-------------------------*/ 766 767static int acx565akm_spi_probe(struct spi_device *spi) 768{ 769 struct acx565akm_device *md = &acx_dev; 770 771 dev_dbg(&spi->dev, "%s\n", __func__); 772 773 spi->mode = SPI_MODE_3; 774 md->spi = spi; 775 mutex_init(&md->mutex); 776 dev_set_drvdata(&spi->dev, md); 777 778 omap_dss_register_driver(&acx_panel_driver); 779 780 return 0; 781} 782 783static int acx565akm_spi_remove(struct spi_device *spi) 784{ 785 struct acx565akm_device *md = dev_get_drvdata(&spi->dev); 786 787 dev_dbg(&md->spi->dev, "%s\n", __func__); 788 omap_dss_unregister_driver(&acx_panel_driver); 789 790 return 0; 791} 792 793static struct spi_driver acx565akm_spi_driver = { 794 .driver = { 795 .name = "acx565akm", 796 .bus = &spi_bus_type, 797 .owner = THIS_MODULE, 798 }, 799 .probe = acx565akm_spi_probe, 800 .remove = __devexit_p(acx565akm_spi_remove), 801}; 802 803static int __init acx565akm_init(void) 804{ 805 return spi_register_driver(&acx565akm_spi_driver); 806} 807 808static void __exit acx565akm_exit(void) 809{ 810 spi_unregister_driver(&acx565akm_spi_driver); 811} 812 813module_init(acx565akm_init); 814module_exit(acx565akm_exit); 815 816MODULE_AUTHOR("Nokia Corporation"); 817MODULE_DESCRIPTION("acx565akm LCD Driver"); 818MODULE_LICENSE("GPL"); 819